I am a nose breather,even though I cannot detect it during a dive, i apprently puch a bit of nose air into the mask everytime i breath, which in turns causes fogging.. My current mask has had fogging issues until this year. I did all the toth paste stuff, ad nausium, Also used every concievlble anti fog on the market. THe only thing I did different this year than other years, was to ONE: Only do the anti fog application as you step out to get into the water, not before. Doing it earlier caused me to fog. 2 Wet/chill your face with cold water (or water of the same temp your diving. to put your face at the same or near temp with the waters your diving. The difference in temps makes a huge fogging issue.
